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Everything posted by Magnum

  1. Im really disappointed in you Steve, that you could mistake the absolute Classic movies Raider of the Lost Arc, for a Batman movie! tut tut
  2. well done Carol, tried this last week with my Samyang @ f2.4 + my ASI533mc from my garden bottle 5/6 but could only get just the iris, even in massive stretch I could barely see a hint of the strongest dark neb on the right. I think I will have to try again with my mono 460 or 383, though I was really hoping the OSC would work on this as ive seen may people getting a good image using OSC, maybe they have darker skies than me. I do fine with narrowband or goalies just never really get anywhere with dark nebulas / IFN. Lee
  3. Thanks, I have posted a few others in the last 2 weeks with this combo if you are interested. Lee
  4. I used to own one back in 2012, mine came with a disk including MaximDL light, Still use MaximDL today albeit the v5 pro suite and with every camera since then, ive never found anything that I prefer or does a better job for capture and stacking. the H9C was an excellent camera, and besides the small size isn't really inferior to the latest sensors in my opinion.
  5. NGC7000 the North American Nebula in Cygnus. 25 x 5 mins with my ZWO ASI533MC cmos camera + Altair Triband & Samyang 135mm lens @ f2.4, tracked on the EQ8. Guided, captured, stacked & stretched + DBE in MaximDL, no calibration frames. processed in Photoshop.
  6. Tonights capture M31 the Andromeda Galaxy wide field. 30 x 90 secs with my ASI533MC cmos ( gain100 ) + Idas LP2 filter & Samyang 135mm lens @f2.4. Guided, captured, stacked & stretched in MaximDL, final processing in photoshop. No calibration frames. Lee
  7. Me too with the Samyang F2 but its normally working at f2.4. Usually doing close up at the same time with one of my other 3 scopes on the rig.
  8. Hi Olly, I presume you have already Seen this on the ZWO site on what they recommend. https://astronomy-imaging-camera.com/tutorials/which-debayer-algorithm-is-the-best-for-asi-cameras.html I download the trial of APP to try it, but found I could already achieve the same in MaximDL5 just by playing with the combination of high quality & Under sampled check boxes in the debayer window, Maxim still impresses me even though its ancient now. Lee
  9. You are getting the hang of the new setup fast Olly, what gain an offset are you using? Lee
  10. if you look at the pass bands of the filter they only let in 2 or 3 narrow bands which don't include any UV or IR so they both are effectively have UV?IR blocking built in, but it could be in the OIII band which is blue. However I dont get them if I use these filters on my other scopes and I dont get them if I use any other filter with the samyang, I only get them using the dual narrowband filters and samyang together with the OSC camera, that include all 3 that ive tried L enhance, L extreme & Tri band. ive added some more examples to my last reply for interest.
  11. I believe its specific wavelength stars the very red carbon stars.
  12. Here is one I took with the L Enhance, 533mc & sayang lens @ f2.8, when I first took this I was convinced id discovered something, but since then I get them pop up all the time LOL. I also found an image with same framing as mine taken with the identical setup and the identical ring on the same star, if you zoom around the full image there are some much fainter ones on several other stars. As I Said before its only on Red stars. Ive attached some example below from several images, as you can see the pop up randomly, not dependent on brightness at all.
  13. ive found another one in the Original posters image, im 90% sure this is the same filter phenomenon I get with my triband and L enhance filters, every image I take with them has 1 0r 2 sometimes half a dozen of them, and yes they show in every sub. And yes they are always close around the star, its nothing like a typical halo, I believe its a spectral interference effect between the filter and glass, due to these new filter trying to pass 2 or 3 lines at the same time. Lee
  14. No it’s just an artefact I get when using any dual narrowband filters in combination with the Samyang lens, on a handful of red stars. the first time I saw one last year I thought it was a planetary nebula too, and sent to the BAA as if never seen that type of halo before, then I found an image taken of the same area with the exact same setup on the other side of the world and that image had the same ring on the same star. Pretty much every image I take using the Tri Band or L enhance will produce have 1 or 2 stars with the same ring, and they are always red stars and usually dim ones.
  15. Ive had it on only 1 star sometimes, but it will always be a red star, what filter are you using? lee
  16. Captured this wide field centred on Gamma Cygni last night, I almost didn't go out then made up my mind at 12, so waisted about 3 hours of imaging time, anyway still managed to get 2 hours and enough to produce a smooth image. So this is 25 x 5 mins with my ZWO ASI533MC OSC cmos camera Gain100 Offset20 + Altair Triband filter & the excellent Samyang 135mm f2 lens set @ f2.4, mounted on the EQ8. Guided, Captured, stacked & stretched in MaximDL, slightly processed in Photoshop, No Calibration frames.
  17. Are you using a dual narrowband filter? I get rings on some red stars with mine when using Altair tri band or L enhance combined with my samyang lens have a look on my image here both on the garnet star then also on a fainter red star near top left
  18. Nice, what Bortle sky are you imaging from? and any filter?
  19. Nice first light Olly, You might be interested in my latest 2 dual narrowband images with my 533 the little brother to the 2600, now ive developed a decent work flow im very happy with the results, ive changed a couple of steps since the data I sent you on Orion. Using the either the Altair Triband or Optolong L Enhance In comparison to real narrowband imaging with mono, I find OSC with dual band filters give a totally different look, its more like broadband image with some ha data added, as the stars don't get suppressed hardly at all, I did try a L Extreme, but I didnt like that as I found I then lost the range of colours in the targets ( ie the reds were all 1 shade ) as well as loosing the yellow stars. I actually really like the effect of having a fairy dust multitude of stars at same time as the Ha, and for me its not going to replace real narrowband, I have a triple rig now so im producing full colour with the 533 triband setup, then if I want to isolate the ha and suppress stars I shoot pure HA mono images with either of the other 2 scopes as I still love mono images. Only thing id watch with the dual narrowband filters is halos, you need to get the filter as close to the sensor as possible when using fast optics, especially with my samyang f2 lens but only on some red stars. Lee
  20. If I can get away without flats then I do, which is usually doable on anything but galactic IFN as long as I keep everything perfectly dust free. Im sticking to my standard longer CCD sub lengths with the cmos, I tried loads of short ones but then I find the image needs stretching a lot more, plus stacking takes too long for me if I have more than 50 subs, I guess im too impatient LOL
  21. I took this image of the Elephant Trunk IC1396 3 weeks ago but forgot to post until now. This is 43 x 5 mins with my ZWO ASI533MC camera + Altair Triband filter and the Samyang 135mm f2 lens @ f2.4. Guided, captured stacked and stretched in MaximDL, processed in Photoshop, no calibration frames as that's how I roll P.S. Yes I know there is an odd ring Halo around the Garnet star, but its an unavoidable artefact on specific colour red stars when using the samyang 135 with Dual Narrowband filters, ive experienced it with the L Enhance, L Extreme and now the Altair Triband. It pops up randomly on specific wavelength red stars and is not related to their brightness. It doesn't bother me at all but thought id point it out before I get comments about it hahahhaahahha, most of the time the red stars are so dim it doesn't really show. Lee
  22. Captured this image of the Heart and Soul nebulae a couple of weeks ago on 16th August but forgot to post on here, 26 x 5 mins with my ZWO ASI533MC camera Gain100 Offset20, + Altair Triband filter & the Samyang 135mm lens @ f2.4. Guided, captured, stacked and stretched in MaximDL, processed in Photoshop. No calibration frames. Really pleased with the image as Ive finally found a good workflow the ASI533 cmos, it has required quite a change compared to my normal longstanding workflow with my mono CCD's, now feel a lot happier with the purchase. I still dont think CMOS is any better than CCD in contrary to popular opinion ( I own both ), but this latest gen has closed the gap to where I feel they are almost equal. Lee
  23. Thanks Olly, it reached max altitude of 15 degrees on the last sub so yes pretty darn low. I normally dont like to image below 40 degrees, but it came out surprisingly well considering.
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